change is in the air,and the study of economics offers no ex

change is in the air,and the study of economics offers no ex a change of mood is now in the air 英语翻译Economics is the study of how society manages its scare the goal of economics? The rate of change of the altitude of a hot-air balloon is g 英语翻译No doubt,change is needed in both the private and public The snow is very ___(疏松)and there is a lot of air in it. 2009长宁 This is a sign of m------- water vapor in the air,and The ___ of oxygen in the air rises, and at last the air beco the University of International Business and Economics是哪所大学 the Department of Economics and Business怎么翻译 she`s sutdied economics and business administration in the t